(1)
Dzhaliuk , N. S.; Petrychkovych , V. M. Equivalence of Matrices in the Ring $M(n, R)$ and Its Subrings. Ukr. Mat. Zhurn. 2021, 73 (12), 1612-1618. https://doi.org/10.37863/umzh.v73i12.6858.